Improvement in attaching doob-knobs



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n. B. 001313,40 E JERSEY CITY, NEW JE "RSB1Y.` v l Letters Paten-t No.V 68,956, dated September 17, 186i'.` l

- IMPROVEMENT IN ATTAGHING DOOBfKNOBS,

@tige ,Segnale referer n iu tigen ettets uint mit noting 'part nf ttt snuit TO ALL WHOM IT MAY CONCERN: t i I d i le it known that I, D. B. COBB, of Jersey City, iu the county of Hudson, and State of Nev; Jersey,` have invented a new and useful Improvement in Securing Door or other-Knobs to metal-Shanks and attaching the same'to spindles or arbors of locks; andv that' tbc following descriptonftaken in connection with the `accompanying drawings, hereinafter referred to, forms -a full' and exact specilication'o fjtheisame, wherein I' have s ct forth the natnreand principles. of my said improvements, by which my inventionmay befdistiuguished fromgall others of c similar class, togetherwitl such parts as -I claim and desire to have `secured to me byLetters Patent.`

This invention relates to a new'and improved method of securing in a durable and simple manner door and other knobsinade from ebony landother woods, hard rubber;v gatta percha, or other materials, to metal shsnks, andnlso in attaching the same t'o lock-spindle or lerben-as hereinafterfully shown snddescribed, whereby` a very strong and durable connection of lthe aforesaid parts'is obtained, and one which adxnits'ol'` a very orna- 4mental and chaste appearance being giventhe knob, and rendering polishing (bynhich the silver plating on plated door-knobs is rapidly worn arvaylnnnecessary. In the accompanying sheet of `drawings-ri Figure 1 is a. longitudinal' section of u knob and shank with an Vordinary lock-spindle or arbor attached.V the securing oi` the knob to the shank and manner of adapting the shahkto the spindle being according to my invention. i y i i" Figure 2 is an external view of' the same. Similar letters of reference indicate like parts.

.t-represents thejarboreespindle-oiel lock, which `may be constructed in` the nsual ivay. B isa metal, shank having a square interior to receive the arbor or spindle AL The shank B may b e cast or formed in fany other wn'y with the socket@1 at its inner' end, said sockets boing of cylindrical form, with a flange, a, at its inner end, and having its interior of annular form to receive -the front endet the knob D, the knob D being borcd'l centrally to receive the shank B, tbc-outer end of the latter having a screw-thread cut upon it, on which a nut,` E,'is itted, the nut E assisting in holding the.4 knob on the shank. The arbor or spindlesAL is secured in the shank B 'by a screw, b,"which.passegjthrongh the socketC,ifront end of knob D. and shank B, .nnd n'to any oi'-` 'a series of holes ini `the arbor or spindle A, as shown in iig. l, the screw b securing the knob to thearbor or spindle A, besides assisting ini seeuringthe knob to the shanll B. The scuare hole in: the shank B is msdc'dccp cnough'to admitl of adjusting th knob on the arboror spindle A to suit doors of various' thicknesscs ,;asis usual with other combinations of knobs-und 'spindles-t The knob and shank can be secured very firmly together, as will be seen, and ns iollon's: `iirst," by drivingI thcshank'hard home over'the front portion of knob tting in to the annular space or socket C; "second, by the t friction of the upper edge of the socket-C, which friction may be incrensed by milling the aforesaid cdc, an l\` therobyoffering great resistance t'o the knobs turning in the socket, particularly aftcrbcing securedby screw` ing the nut up tight; third, by holding'the shank'and knob iirmlytogetherregardless of `friction; and, fomfth,``

by further securing the shank to knobby means ofthe screw b, ns abovodescribed.` j

The above-described combinations of fastening knobs to shanks'ar'e deemed smplysnilcicnt to render any" `liability of their turning in their sockets'iinpossible without destroying the knob;` In; caso` of thcjbreakingof a knob, or the disfigurement of the same from anylcansc, it maybe detschedfroni themetallic `shank unda not one applied without any' diiiicul'ty whatever. In lieu of lthe nut E arivetmay-,be employed, but thcnut would l be preferable. i i

Having thus described mylinvcntion, I claim as new, imd desire tosecnreliyiietters Patent-` The metallic shank B, providednvth thotsockct Cfin connection-nifl# thou ni knob D, all arranged substantially in thc-manner as and forthe purpose'sett-fort Q fn, n.L conn.

Witnesses: l

WM. F. McNAMAnA, ALEX. F. Ronnnrs.

Ecrits equivalent, and the i 

